What's the story here?
The first cemetery in New Orleans designed for above ground burial was the St. Louis #1 cemetery, which opened in 1789. The practice was brought over from France and Spain and implemented due to some of the city falling below sea level.
The Cemeteries of New Orleans are much like the city itself. They are a mirror to the opulence and desecration of a mysterious and enchanting city. They dance back and forth between beauty and ruin. Like New Orleans, the city cemeteries hide secrets… secrets that most will never discover. ~ Troy Taylor, Haunted New Orleans
Read more about the Cemeteries of New Orleans here